Several results obtained within the SUSY group of the ECFA/DESY linear collider study are presented: (i) a possibility to determine ( aneta) and the trilinear couplings Af via polarisation in sfermion decays, (ii) the impact of complex MSSM parameters on the third generation sfermion decays, (iii) determination of CP violation in the complex MSSM via T-odd asymmetries in neutralino production and decay, and (iv) an analysis of the chargino and neutralino mass parameters at one-loop level.
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